A 71 year old woman presents with rapidly progressive weakness of her right upper and lower limbs for 1 hour, along with pain in the back of her neck. There was no history of antecedent trauma.

Her medical history is significant only for hypertension for 5 years, which is well controlled on ramipril alone.

A random capillary glucose is found to be 130 mg/dl, as is her electrolyte profile, renal functions and liver functions.